657 lines
20 KiB
Plaintext
657 lines
20 KiB
Plaintext
[role="xpack"]
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[testenv="platinum"]
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[[put-dfanalytics]]
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= Create {dfanalytics-jobs} API
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[subs="attributes"]
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++++
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<titleabbrev>Create {dfanalytics-jobs}</titleabbrev>
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++++
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Instantiates a {dfanalytics-job}.
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experimental[]
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[[ml-put-dfanalytics-request]]
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== {api-request-title}
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`PUT _ml/data_frame/analytics/<data_frame_analytics_id>`
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[[ml-put-dfanalytics-prereq]]
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== {api-prereq-title}
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If the {es} {security-features} are enabled, you must have the following built-in roles and privileges:
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* `machine_learning_admin`
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* source indices: `read`, `view_index_metadata`
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* destination index: `read`, `create_index`, `manage` and `index`
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For more information, see <<built-in-roles>>, <<security-privileges>>, and
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{ml-docs-setup-privileges}.
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NOTE: The {dfanalytics-job} remembers which roles the user who created it had at
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the time of creation. When you start the job, it performs the analysis using
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those same roles. If you provide
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<<http-clients-secondary-authorization,secondary authorization headers>>,
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those credentials are used instead.
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[[ml-put-dfanalytics-desc]]
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== {api-description-title}
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This API creates a {dfanalytics-job} that performs an analysis on the source
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indices and stores the outcome in a destination index.
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If the destination index does not exist, it is created automatically when you
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start the job. See <<start-dfanalytics>>.
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If you supply only a subset of the {regression} or {classification} parameters,
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{ml-docs}/hyperparameters.html[hyperparameter optimization] occurs. It
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determines a value for each of the undefined parameters.
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[[ml-put-dfanalytics-path-params]]
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== {api-path-parms-title}
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`<data_frame_analytics_id>`::
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(Required, string)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=job-id-data-frame-analytics-define]
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[role="child_attributes"]
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[[ml-put-dfanalytics-request-body]]
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== {api-request-body-title}
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`allow_lazy_start`::
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(Optional, boolean)
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Specifies whether this job can start when there is insufficient {ml} node
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capacity for it to be immediately assigned to a node. The default is `false`; if
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a {ml} node with capacity to run the job cannot immediately be found, the
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<<start-dfanalytics>> API returns an error. However, this is also subject to the
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cluster-wide `xpack.ml.max_lazy_ml_nodes` setting. See <<advanced-ml-settings>>.
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If this option is set to `true`, the API does not return an error and the job
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waits in the `starting` state until sufficient {ml} node capacity is available.
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//Begin analysis
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`analysis`::
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(Required, object)
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The analysis configuration, which contains the information necessary to perform
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one of the following types of analysis: {classification}, {oldetection}, or
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{regression}.
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+
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.Properties of `analysis`
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[%collapsible%open]
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====
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//Begin classification
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`classification`:::
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(Required^*^, object)
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The configuration information necessary to perform
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{ml-docs}/dfa-classification.html[{classification}].
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+
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TIP: Advanced parameters are for fine-tuning {classanalysis}. They are set
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automatically by hyperparameter optimization to give the minimum validation
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error. It is highly recommended to use the default values unless you fully
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understand the function of these parameters.
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+
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.Properties of `classification`
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[%collapsible%open]
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=====
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`class_assignment_objective`::::
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(Optional, string)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=class-assignment-objective]
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`dependent_variable`::::
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(Required, string)
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+
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=dependent-variable]
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+
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The data type of the field must be numeric (`integer`, `short`, `long`, `byte`),
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categorical (`ip` or `keyword`), or boolean. There must be no more than 30
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different values in this field.
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`eta`::::
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(Optional, double)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=eta]
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`feature_bag_fraction`::::
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(Optional, double)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=feature-bag-fraction]
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`feature_processors`::::
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(Optional, list)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=dfas-feature-processors]
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`gamma`::::
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(Optional, double)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=gamma]
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`lambda`::::
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(Optional, double)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=lambda]
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`max_trees`::::
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(Optional, integer)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=max-trees]
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`num_top_classes`::::
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(Optional, integer)
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Defines the number of categories for which the predicted probabilities are
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reported. It must be non-negative or -1. If it is -1 or greater than the total
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number of categories, probabilities are reported for all categories; if you have
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a large number of categories, there could be a significant effect on the size of your destination index. Defaults to 2.
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+
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--
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NOTE: To use the
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{ml-docs}/ml-dfanalytics-evaluate.html#ml-dfanalytics-class-aucroc[AUC ROC evaluation method],
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`num_top_classes` must be set to `-1` or a value greater than or equal to the
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total number of categories.
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--
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`num_top_feature_importance_values`::::
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(Optional, integer)
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Advanced configuration option. Specifies the maximum number of
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{ml-docs}/ml-feature-importance.html[{feat-imp}] values per document to return.
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By default, it is zero and no {feat-imp} calculation occurs.
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`prediction_field_name`::::
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(Optional, string)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=prediction-field-name]
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`randomize_seed`::::
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(Optional, long)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=randomize-seed]
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`training_percent`::::
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(Optional, integer)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=training-percent]
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//End classification
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=====
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//Begin outlier_detection
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`outlier_detection`:::
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(Required^*^, object)
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The configuration information necessary to perform
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{ml-docs}/dfa-outlier-detection.html[{oldetection}]:
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+
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.Properties of `outlier_detection`
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[%collapsible%open]
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=====
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`compute_feature_influence`::::
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(Optional, boolean)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=compute-feature-influence]
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`feature_influence_threshold`::::
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(Optional, double)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=feature-influence-threshold]
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`method`::::
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(Optional, string)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=method]
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`n_neighbors`::::
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(Optional, integer)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=n-neighbors]
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`outlier_fraction`::::
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(Optional, double)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=outlier-fraction]
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`standardization_enabled`::::
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(Optional, boolean)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=standardization-enabled]
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//End outlier_detection
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=====
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//Begin regression
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`regression`:::
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(Required^*^, object)
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The configuration information necessary to perform
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{ml-docs}/dfa-regression.html[{regression}].
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+
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TIP: Advanced parameters are for fine-tuning {reganalysis}. They are set
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automatically by hyperparameter optimization to give minimum validation error.
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It is highly recommended to use the default values unless you fully understand
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the function of these parameters.
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+
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.Properties of `regression`
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[%collapsible%open]
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=====
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`dependent_variable`::::
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(Required, string)
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+
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=dependent-variable]
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+
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The data type of the field must be numeric.
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`eta`::::
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(Optional, double)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=eta]
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`feature_bag_fraction`::::
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(Optional, double)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=feature-bag-fraction]
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`feature_processors`::::
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(Optional, list)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=dfas-feature-processors]
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`gamma`::::
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(Optional, double)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=gamma]
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`lambda`::::
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(Optional, double)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=lambda]
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`loss_function`::::
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(Optional, string)
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The loss function used during {regression}. Available options are `mse` (mean
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squared error), `msle` (mean squared logarithmic error), `huber` (Pseudo-Huber
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loss). Defaults to `mse`. Refer to
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{ml-docs}/dfa-regression.html#dfa-regression-lossfunction[Loss functions for {regression} analyses]
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to learn more.
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`loss_function_parameter`::::
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(Optional, double)
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A positive number that is used as a parameter to the `loss_function`.
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`max_trees`::::
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(Optional, integer)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=max-trees]
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`num_top_feature_importance_values`::::
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(Optional, integer)
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Advanced configuration option. Specifies the maximum number of
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{ml-docs}/ml-feature-importance.html[{feat-imp}] values per document to return.
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By default, it is zero and no {feat-imp} calculation occurs.
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`prediction_field_name`::::
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(Optional, string)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=prediction-field-name]
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`randomize_seed`::::
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(Optional, long)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=randomize-seed]
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`training_percent`::::
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(Optional, integer)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=training-percent]
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=====
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//End regression
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====
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//End analysis
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//Begin analyzed_fields
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`analyzed_fields`::
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(Optional, object)
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Specify `includes` and/or `excludes` patterns to select which fields will be
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included in the analysis. The patterns specified in `excludes` are applied last,
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therefore `excludes` takes precedence. In other words, if the same field is
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specified in both `includes` and `excludes`, then the field will not be included
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in the analysis.
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+
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--
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[[dfa-supported-fields]]
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The supported fields for each type of analysis are as follows:
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* {oldetection-cap} requires numeric or boolean data to analyze. The algorithms
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don't support missing values therefore fields that have data types other than
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numeric or boolean are ignored. Documents where included fields contain missing
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values, null values, or an array are also ignored. Therefore the `dest` index
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may contain documents that don't have an {olscore}.
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* {regression-cap} supports fields that are numeric, `boolean`, `text`,
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`keyword`, and `ip`. It is also tolerant of missing values. Fields that are
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supported are included in the analysis, other fields are ignored. Documents
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where included fields contain an array with two or more values are also
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ignored. Documents in the `dest` index that don’t contain a results field are
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not included in the {reganalysis}.
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* {classification-cap} supports fields that are numeric, `boolean`, `text`,
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`keyword`, and `ip`. It is also tolerant of missing values. Fields that are
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supported are included in the analysis, other fields are ignored. Documents
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where included fields contain an array with two or more values are also ignored.
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Documents in the `dest` index that don’t contain a results field are not
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included in the {classanalysis}. {classanalysis-cap} can be improved by mapping
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ordinal variable values to a single number. For example, in case of age ranges,
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you can model the values as "0-14" = 0, "15-24" = 1, "25-34" = 2, and so on.
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If `analyzed_fields` is not set, only the relevant fields will be included. For
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example, all the numeric fields for {oldetection}. For more information about
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field selection, see <<explain-dfanalytics>>.
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--
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+
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.Properties of `analyzed_fields`
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[%collapsible%open]
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====
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`excludes`:::
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(Optional, array)
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An array of strings that defines the fields that will be excluded from the
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analysis. You do not need to add fields with unsupported data types to
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`excludes`, these fields are excluded from the analysis automatically.
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`includes`:::
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(Optional, array)
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An array of strings that defines the fields that will be included in the
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analysis.
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//End analyzed_fields
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====
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`description`::
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(Optional, string)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=description-dfa]
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`dest`::
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(Required, object)
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include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=dest]
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`max_num_threads`::
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(Optional, integer)
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The maximum number of threads to be used by the analysis.
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The default value is `1`. Using more threads may decrease the time
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necessary to complete the analysis at the cost of using more CPU.
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Note that the process may use additional threads for operational
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functionality other than the analysis itself.
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`model_memory_limit`::
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(Optional, string)
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The approximate maximum amount of memory resources that are permitted for
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analytical processing. The default value for {dfanalytics-jobs} is `1gb`. If
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your `elasticsearch.yml` file contains an `xpack.ml.max_model_memory_limit`
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setting, an error occurs when you try to create {dfanalytics-jobs} that have
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`model_memory_limit` values greater than that setting. For more information, see
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<<ml-settings>>.
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`source`::
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(object)
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The configuration of how to source the analysis data. It requires an `index`.
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Optionally, `query` and `_source` may be specified.
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+
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.Properties of `source`
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[%collapsible%open]
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====
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`index`:::
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(Required, string or array) Index or indices on which to perform the analysis.
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It can be a single index or index pattern as well as an array of indices or
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patterns.
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+
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WARNING: If your source indices contain documents with the same IDs, only the
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document that is indexed last appears in the destination index.
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`query`:::
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(Optional, object) The {es} query domain-specific language (<<query-dsl,DSL>>).
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This value corresponds to the query object in an {es} search POST body. All the
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options that are supported by {es} can be used, as this object is passed
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verbatim to {es}. By default, this property has the following value:
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`{"match_all": {}}`.
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`_source`:::
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(Optional, object) Specify `includes` and/or `excludes` patterns to select which
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fields will be present in the destination. Fields that are excluded cannot be
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included in the analysis.
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+
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.Properties of `_source`
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[%collapsible%open]
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=====
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`includes`::::
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(array) An array of strings that defines the fields that will be included in the
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destination.
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`excludes`::::
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(array) An array of strings that defines the fields that will be excluded from
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the destination.
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=====
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====
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[[ml-put-dfanalytics-example]]
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== {api-examples-title}
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[[ml-put-dfanalytics-example-preprocess]]
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=== Preprocessing actions example
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The following example shows how to limit the scope of the analysis to certain
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fields, specify excluded fields in the destination index, and use a query to
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filter your data before analysis.
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[source,console]
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--------------------------------------------------
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PUT _ml/data_frame/analytics/model-flight-delays-pre
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{
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"source": {
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"index": [
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"kibana_sample_data_flights" <1>
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],
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"query": { <2>
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"range": {
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"DistanceKilometers": {
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"gt": 0
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}
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}
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},
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"_source": { <3>
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"includes": [],
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"excludes": [
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"FlightDelay",
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"FlightDelayType"
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]
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}
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},
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"dest": { <4>
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"index": "df-flight-delays",
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"results_field": "ml-results"
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},
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"analysis": {
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"regression": {
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"dependent_variable": "FlightDelayMin",
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"training_percent": 90
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}
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},
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"analyzed_fields": { <5>
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"includes": [],
|
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"excludes": [
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"FlightNum"
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]
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},
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"model_memory_limit": "100mb"
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}
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--------------------------------------------------
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// TEST[skip:setup kibana sample data]
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<1> Source index to analyze.
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<2> This query filters out entire documents that will not be present in the
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destination index.
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<3> The `_source` object defines fields in the dataset that will be included or
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excluded in the destination index.
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<4> Defines the destination index that contains the results of the analysis and
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the fields of the source index specified in the `_source` object. Also defines
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the name of the `results_field`.
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<5> Specifies fields to be included in or excluded from the analysis. This does
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not affect whether the fields will be present in the destination index, only
|
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affects whether they are used in the analysis.
|
||
|
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In this example, we can see that all the fields of the source index are included
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in the destination index except `FlightDelay` and `FlightDelayType` because
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these are defined as excluded fields by the `excludes` parameter of the
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`_source` object. The `FlightNum` field is included in the destination index,
|
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however it is not included in the analysis because it is explicitly specified as
|
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excluded field by the `excludes` parameter of the `analyzed_fields` object.
|
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|
||
|
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[[ml-put-dfanalytics-example-od]]
|
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=== {oldetection-cap} example
|
||
|
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The following example creates the `loganalytics` {dfanalytics-job}, the analysis
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type is `outlier_detection`:
|
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|
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[source,console]
|
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--------------------------------------------------
|
||
PUT _ml/data_frame/analytics/loganalytics
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{
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"description": "Outlier detection on log data",
|
||
"source": {
|
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"index": "logdata"
|
||
},
|
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"dest": {
|
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"index": "logdata_out"
|
||
},
|
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"analysis": {
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"outlier_detection": {
|
||
"compute_feature_influence": true,
|
||
"outlier_fraction": 0.05,
|
||
"standardization_enabled": true
|
||
}
|
||
}
|
||
}
|
||
--------------------------------------------------
|
||
// TEST[setup:setup_logdata]
|
||
|
||
|
||
The API returns the following result:
|
||
|
||
[source,console-result]
|
||
----
|
||
{
|
||
"id": "loganalytics",
|
||
"description": "Outlier detection on log data",
|
||
"source": {
|
||
"index": ["logdata"],
|
||
"query": {
|
||
"match_all": {}
|
||
}
|
||
},
|
||
"dest": {
|
||
"index": "logdata_out",
|
||
"results_field": "ml"
|
||
},
|
||
"analysis": {
|
||
"outlier_detection": {
|
||
"compute_feature_influence": true,
|
||
"outlier_fraction": 0.05,
|
||
"standardization_enabled": true
|
||
}
|
||
},
|
||
"model_memory_limit": "1gb",
|
||
"create_time" : 1562265491319,
|
||
"version" : "7.6.0",
|
||
"allow_lazy_start" : false,
|
||
"max_num_threads": 1
|
||
}
|
||
----
|
||
// TESTRESPONSE[s/1562265491319/$body.$_path/]
|
||
// TESTRESPONSE[s/"version" : "7.6.0"/"version" : $body.version/]
|
||
|
||
|
||
[[ml-put-dfanalytics-example-r]]
|
||
=== {regression-cap} examples
|
||
|
||
The following example creates the `house_price_regression_analysis`
|
||
{dfanalytics-job}, the analysis type is `regression`:
|
||
|
||
[source,console]
|
||
--------------------------------------------------
|
||
PUT _ml/data_frame/analytics/house_price_regression_analysis
|
||
{
|
||
"source": {
|
||
"index": "houses_sold_last_10_yrs"
|
||
},
|
||
"dest": {
|
||
"index": "house_price_predictions"
|
||
},
|
||
"analysis":
|
||
{
|
||
"regression": {
|
||
"dependent_variable": "price"
|
||
}
|
||
}
|
||
}
|
||
--------------------------------------------------
|
||
// TEST[skip:TBD]
|
||
|
||
|
||
The API returns the following result:
|
||
|
||
[source,console-result]
|
||
----
|
||
{
|
||
"id" : "house_price_regression_analysis",
|
||
"source" : {
|
||
"index" : [
|
||
"houses_sold_last_10_yrs"
|
||
],
|
||
"query" : {
|
||
"match_all" : { }
|
||
}
|
||
},
|
||
"dest" : {
|
||
"index" : "house_price_predictions",
|
||
"results_field" : "ml"
|
||
},
|
||
"analysis" : {
|
||
"regression" : {
|
||
"dependent_variable" : "price",
|
||
"training_percent" : 100
|
||
}
|
||
},
|
||
"model_memory_limit" : "1gb",
|
||
"create_time" : 1567168659127,
|
||
"version" : "8.0.0",
|
||
"allow_lazy_start" : false
|
||
}
|
||
----
|
||
// TESTRESPONSE[s/1567168659127/$body.$_path/]
|
||
// TESTRESPONSE[s/"version": "8.0.0"/"version": $body.version/]
|
||
|
||
|
||
The following example creates a job and specifies a training percent:
|
||
|
||
[source,console]
|
||
--------------------------------------------------
|
||
PUT _ml/data_frame/analytics/student_performance_mathematics_0.3
|
||
{
|
||
"source": {
|
||
"index": "student_performance_mathematics"
|
||
},
|
||
"dest": {
|
||
"index":"student_performance_mathematics_reg"
|
||
},
|
||
"analysis":
|
||
{
|
||
"regression": {
|
||
"dependent_variable": "G3",
|
||
"training_percent": 70, <1>
|
||
"randomize_seed": 19673948271 <2>
|
||
}
|
||
}
|
||
}
|
||
--------------------------------------------------
|
||
// TEST[skip:TBD]
|
||
|
||
<1> The percentage of the data set that is used for training the model.
|
||
<2> The seed that is used to randomly pick which data is used for training.
|
||
|
||
|
||
[[ml-put-dfanalytics-example-c]]
|
||
=== {classification-cap} example
|
||
|
||
The following example creates the `loan_classification` {dfanalytics-job}, the
|
||
analysis type is `classification`:
|
||
|
||
[source,console]
|
||
--------------------------------------------------
|
||
PUT _ml/data_frame/analytics/loan_classification
|
||
{
|
||
"source" : {
|
||
"index": "loan-applicants"
|
||
},
|
||
"dest" : {
|
||
"index": "loan-applicants-classified"
|
||
},
|
||
"analysis" : {
|
||
"classification": {
|
||
"dependent_variable": "label",
|
||
"training_percent": 75,
|
||
"num_top_classes": 2
|
||
}
|
||
}
|
||
}
|
||
--------------------------------------------------
|
||
// TEST[skip:TBD]
|